and documented that the standards to detect bacteria were inadequate for determining viral contamination in drinking water, which resulted in new purification standards.
There is still no guaranteed safety measure in place today to protect the general public with regards to shellfish and viral contamination.
The company's recent crisis started in June when it had to close its factory in Boston because of viral contamination.
The company was forced to temporarily close its main factory, in Boston's Allston neighborhood, in June, 2009 because of viral contamination.
Last June, Genzyme was forced to shut its factory, on the banks of the Charles River in the Allston neighborhood of Boston, because of viral contamination.
The company has struggled to improve its stock performance after it battled a viral contamination problem at its main production plant in Boston last year.
Shire added 31p to £15.09 as US regulators said they may take control of one of Genzyme's manufacturing plants, which was temporarily shut last year due to a viral contamination, for an extended period and could impose charges on the company.
Set to be publicly traded, the contingent value right will pay $1 a share if Genzyme meets its production targets for Cerezyme and Fabrazyme, the output of which was slowed because of viral contamination at its plant in 2009.
Sanofi has also expressed concern about whether Genzyme has recovered from a viral contamination that had plagued one of its main manufacturing plants and slowed down production of two major drugs, Cerezyme and Fabrazyme.
Sanofi is catching Genzyme at a crucial moment in its turnaround efforts: the biotech company has been struggling to bolster its stock price after battling a viral contamination problem at its main Boston factory last year.
In June a viral contamination shut down its plant, causing a severe drug shortage.
